WO2018016733A1 - 세탁기 - Google Patents

세탁기 Download PDF

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Publication number
WO2018016733A1
WO2018016733A1 PCT/KR2017/005683 KR2017005683W WO2018016733A1 WO 2018016733 A1 WO2018016733 A1 WO 2018016733A1 KR 2017005683 W KR2017005683 W KR 2017005683W WO 2018016733 A1 WO2018016733 A1 WO 2018016733A1
Authority
WO
WIPO (PCT)
Prior art keywords
drum
washing machine
pulsator
rotor
present
Prior art date
Application number
PCT/KR2017/005683
Other languages
English (en)
French (fr)
Korean (ko)
Inventor
정정교
윤부근
이케다이즈미
강근
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to US16/319,172 priority Critical patent/US10982371B2/en
Priority to CN201780043985.8A priority patent/CN109477279B/zh
Priority to EP17831207.0A priority patent/EP3453795B1/en
Publication of WO2018016733A1 publication Critical patent/WO2018016733A1/ko

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry 
    • D06F23/02—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry  and rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
    • D06F37/065—Ribs, lifters, or rubbing means forming part of the receptacle ribs or lifters having means for circulating the washing liquid
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/30—Driving arrangements 
    • D06F37/40—Driving arrangements  for driving the receptacle and an agitator or impeller, e.g. alternatively
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
    • D06F17/08—Driving arrangements for the impeller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to a washing machine, and more particularly, to a washing machine capable of independently driving a drum and a pulsator.
  • a washing machine is a machine that washes clothes using electric power, and generally includes a water tank for storing wash water and a drum rotatably installed inside the water tank.
  • Such types of washing machines include a drum type washing machine which washes laundry by raising and dropping the laundry upward while the rotating tub rotates, and an electric washing machine that washes the laundry using water flow generated by a pulsator when the rotating tub rotates.
  • the drum type washing machine is arranged so that the rotating shaft of the drum is arranged in a substantially horizontal direction so that the laundry is pulled upward and dropped according to the rotation of the drum so that washing is performed by falling.
  • the conventional drum washing machine included a lifter provided inside the drum to lift the laundry upwards.
  • the conventional drum washing machine unlike the electric washing machine, is not provided with a pulsator for generating water flow inside the drum.
  • One aspect of the present invention discloses a drum type washing machine, in which a washing machine having a pulsator and a lifter is omitted.
  • Another aspect of the present invention discloses a washing machine capable of independently driving a drum and a pulsator by adopting a dual drive motor in a drum type washing machine.
  • Another aspect of the present invention discloses a washing machine capable of improving washing performance by providing a pulsator driven independently of a drum in a drum type washing machine.
  • Another aspect of the present invention discloses a washing machine capable of shortening a washing time by providing a pulsator driven independently of a drum in a drum type washing machine to improve washing performance.
  • Washing machine includes a main body having a laundry inlet on the front; A water tank provided inside the main body to store wash water; A drum rotatably provided in the tank; A pulsator provided inside the drum and configured to be rotatable independently of the drum; And a driving device for supplying power to the drum and the pulsator, wherein a separate structure is not mounted on an inner surface of the drum.
  • the drum may include a plurality of through holes formed continuously along the circumferential surface.
  • Rotation directions of the drum and the pulsator may be different.
  • the drive device may include an annular stator, a first rotor that rotates inside the stator, and a second rotor that rotates outside the stator.
  • the washing machine can independently drive the drum and the pulsator using the dual drive motor, the washing performance can be improved and the washing time can be shortened.
  • FIG. 1 is a side cross-sectional view showing a schematic configuration of a washing machine according to an embodiment of the present invention.
  • FIG. 2 is a view showing the inside of the washing machine shown in FIG.
  • Figure 3 is a view showing the inside of the tank, the drum, and the pulsator of the washing machine according to an embodiment of the present invention.
  • FIG. 4 is an enlarged view of a portion of the washing machine shown in FIG. 1.
  • FIG. 5 is an enlarged view of a portion of the washing machine shown in FIG. 4.
  • Figure 6 is a view showing the interior of the water tank, the drum, and the pulsator according to another embodiment of the present invention.
  • FIG. 7 is a view showing the interior of a water tank, a drum, and a pulsator according to another embodiment of the present invention.
  • first may be referred to as the second component
  • second component may also be referred to as the first component.
  • the term “and / or” includes any combination of a plurality of related items or any of a plurality of related items.
  • the front loading type washing machine for putting laundry in front of the washing machine will be described by way of example, but the spirit of the present invention is not limited thereto, and the present invention may be applied to a top loading type washing machine for putting laundry in the upper side of the washing machine.
  • FIG. 1 is a side sectional view showing a schematic configuration of a washing machine 1 according to an embodiment of the present invention.
  • FIG. 2 is a view showing the inside of the washing machine 1 shown in FIG. 1.
  • the washing machine 1 includes a main body 10 forming an exterior and accommodating various components therein, a water tank 20 provided inside the main body 10 to store wash water, and laundry. And a drum 110 to receive and rotate, a pulsator 120 rotatably provided inside the drum 110, and a driving device 130 to rotate the drum 110 and the pulsator 120. Can be.
  • the main body 10 may have a substantially box shape.
  • the main body 10 may have a front plate, a back plate, an upper plate, a bottom plate, and a side plate.
  • a laundry inlet 10a may be formed in the front plate to inject laundry into the drum 110.
  • the laundry inlet 10a of the main body 10 may be opened and closed by the door 60.
  • the door 60 may be rotatably coupled to the main body 10 by a hinge member.
  • the door 60 may be composed of a glass member and a door frame supporting the glass member.
  • the glass member may be formed of a transparent tempered glass material so as to see the inside of the body 10.
  • the glass member may be provided to protrude toward the inside of the water tank 20 to prevent the laundry from being biased toward the door 60.
  • the water tank 20 may store washing water and may have a substantially cylindrical shape.
  • the bath 20 may be supported by a suspension device.
  • the water tank 20 includes a hollow cylindrical portion 21, an opening 22 formed at one side of the cylindrical portion 21 to correspond to the laundry inlet 10a of the main body 10, and the cylindrical portion 21. It may include a bottom portion 23 formed on the other side.
  • the laundry inlet 10a of the front plate of the main body 10 and the opening 22 of the water tank 20 may be connected by the diaphragm 50.
  • the diaphragm 50 forms a passage connecting the laundry inlet 10a of the front plate of the main body 10 and the opening 22 of the tub 20, and loads the laundry introduced into the laundry inlet 10a into the drum 110. It guides to the inside of, and reduces the vibration generated in the rotation of the drum 110 to the main body 10.
  • the washing machine 1 may include a drainage device 16 capable of draining the washing water of the water tank 20.
  • the drainage device 16 may include a drain pipe 17 connected to the lower portion of the water tank 20 to guide the wash water to the outside of the main body 10, and a drain pump to pump the wash water of the water tank 20. .
  • the upper portion of the water tank 20 may be provided with a water supply device 11 for supplying the wash water to the interior of the water tank (20).
  • the water supply device 11 may include a water supply pipe 12 through which washing water is supplied from an external water supply source, and a water supply valve for opening and closing the water supply pipe 12.
  • Detergent supply device 14 for supplying a detergent to the water tank 20 may be provided in the upper portion of the front of the main body 10. Detergent supply device 14 may be connected to the water tank 20 through a connecting pipe. The wash water supplied through the water supply pipe 12 may be supplied to the inside of the water tank 20 together with the detergent via the detergent supply device 14.
  • FIG. 3 is a view showing the inside of the water tank 20, the drum 110, and the pulsator 120 of the washing machine 1 according to an embodiment of the present invention.
  • 4 is an enlarged view of a part of the washing machine 1 shown in FIG. 1.
  • FIG. 5 is an enlarged view of a part of the washing machine 1 shown in FIG. 4. However, in FIG. 4, the through hole 111 of the drum 110 is omitted.
  • the drum 110 may have a substantially cylindrical shape with an open front surface, and may be provided inside the water tank 20.
  • the drum 110 may have a central axis parallel to the central axis of the water tank 20.
  • the drum 110 may rotate inside the water tank 20.
  • the drum 110 may perform the laundry by raising and falling the laundry while rotating. Since the drum 110 of the present invention does not have a separate structure on the inner surface, it is possible to secure a washing space more widely.
  • the washing machine 1 according to the embodiment of the present invention may rotate at a faster speed than the conventional one.
  • the drum rotates at 45 RPM
  • the washing machine 1 according to an embodiment of the present invention may rotate the drum 110 at 70 RPM to 80 RPM. That is, in the washing machine 1 according to the embodiment of the present invention, the drum 110 may rotate to the extent that the laundry may be raised and dropped by the centrifugal force.
  • a plurality of through holes 111 may be formed around the drum 110 so that the wash water stored in the water tank 20 is circulated.
  • a plurality of through holes 111 may be continuously formed along the circumferential surface of the drum 110. That is, in the conventional washing machine, as a lifter for raising laundry is provided on a part of the inner circumferential surface of the drum, a plurality of through holes are not continuously formed along the circumferential surface of the drum. That is, in the conventional washing machine, a hole is not formed in a portion where a lifter is provided.
  • the protrusion 112 forming the through hole 111 may be provided in a shape protruding inward of the drum 110. According to this shape, the wash water can be easily introduced into the drum 110, but is not easily escaped to the outside of the drum 110. Accordingly, the drum 110 of the washing machine 1 according to an embodiment of the present invention may be introduced more washing water than in the prior art to improve the washing performance.
  • the drum 110 may be connected to the driving device 130 which will be described later with the other side opposite to one side facing the laundry inlet 10a.
  • the pulsator 120 is provided on the other side opposite to one side facing the laundry inlet 10a of the drum 110, and may be configured to rotate independently of the drum 110. That is, the pulsator 120 may rotate in a direction different from that of the drum 110.
  • the pulsator 120 may include a first blade 121a, a second blade 121b, and a coupling part 122.
  • the first blade 121a may be provided to have a larger size than the second blade 121b. That is, in the washing machine 1 according to the embodiment of the present invention, since the second blade 121b is provided in a smaller size than the first blade 121a, the washing space 1 may be more widely secured.
  • Washing machine 1 by the first blade (121a) and the second blade (121b), when viewed from the front to the part where the door 60 is provided in FIG.
  • This direction can also be agitated, and as described above, as the drum 110 rotates at a high speed, laundry can be prevented from sticking to the drum 110.
  • by rotating the drum 110 and the pulsator 120 in the opposite direction when washing can be more effectively stirred laundry can improve the washing performance.
  • the pulsator 120 may be coupled to the coupling part 122 to the second drive shaft 132 which will be described later, and may receive rotation from the driving device 130.
  • the coupling part 122 of the pulsator 120 may be connected and fixed to the second drive shaft 132 by the coupling part fixing member 124.
  • the rear of the water tank 20 may be provided with a driving device 130 for providing power to rotate the drum 110 and the pulsator 120 simultaneously or selectively.
  • the drive device 130 includes a first drive shaft 131 connected to the drum 110, a second drive shaft 132 rotatably disposed in the first drive shaft 131, and connected to the pulsator 120. , Between the first rotor 133 connected to the first drive shaft 131, the second rotor 134 connected to the second drive shaft 132, and between the first rotor 133 and the second rotor 134. It may include a stator 135 disposed with a gap.
  • the driving device 130 may convert the electric force into mechanical rotational force.
  • the driving device may be a dual drive motor capable of rotating the drum 110 and the pulsator 120, respectively.
  • the rotational force generated by the driving device 130 may be transmitted to the drum 110 through the first driving shaft 134, and the pulsator (eg, through the second driving shaft 135 provided inside the first driving shaft 134). 120).
  • the first drive shaft 134 is press-fitted into the first rotor 132 and provided to rotate together with the first rotor 132, and connects the drum 110 and the driving device 130 through the rear wall of the water tank 20. Can be.
  • the first bearing 136a and the second bearing 136b for rotatably supporting the first driving shaft 131 may be disposed on the outer circumferential surface of the first driving shaft 131 at a predetermined interval.
  • the first bearing 136a and the second bearing 136b may be fixed to the tank 20.
  • the first drive shaft 131 may have a cylindrical shape so that the second drive shaft 132 can pass therethrough.
  • the first drive shaft 131 has a first stepped portion 131a and a second bearing 136b having a smaller outer diameter so that the first bearing 136a is mounted to prevent the first bearing 136a from flowing up and down. It may include a second stepped portion (131b) is mounted so that the outer diameter is reduced to prevent the second bearing (136b) from flowing up and down.
  • first driving shaft 131 may be formed with a first connecting portion 131c to which the first rotor 133 is connected to the lower side of the portion where the first bearing 136a is mounted, and of the first connecting portion 131c.
  • the first fixing nut 131d may be fastened to the lower side to fix the first rotor 133 to the first drive shaft 131.
  • the first drive shaft 131 is formed above the portion where the second bearing 136b is inserted, and connects the first drive shaft 131 and the bottom of the drum 110 to connect the rotational force of the first drive shaft 131 to the drum 110. It may include a second connecting portion (131e) connected to the flange member 128 to be delivered to).
  • the first connecting portion 131c and the second connecting portion 131e may be screwed to the first rotor 133 and the flange member 128 by forming a thread on the outer circumferential surface of the first drive shaft 131, but the present invention is not limited thereto.
  • the first connecting portion 131c and the second connecting portion 131e may be any structure as long as the first rotor 133 and the flange member 128 can be connected to the outer surface of the first driving shaft 131. Do.
  • the second driving shaft 135 may be pressed into the second rotor 133 to rotate together with the second rotor 133, and may be rotatably provided in the hollow formed in the first driving shaft 134. .
  • the second driving shaft 135 may connect the pulsator 120 and the driving device 130 through the rear wall of the water tank 20.
  • the second drive shaft 132 is formed at the lower end of the third connecting portion 132a which is drawn out from the lower end of the first drive shaft 131 and connected to the second rotor 134, and the second rotor 134 is formed at the lower end of the second driving shaft 132.
  • the second fixing nut 132b may be fastened to prevent separation.
  • the second driving shaft 132 may be formed at the upper end with a fourth connection part 132c which is drawn from the upper end of the first driving shaft 131 and connected to the pulsator 120.
  • the third connecting portion 132a and the fourth connecting portion 132c may be screwed to the second rotor 134 and the pulsator 120 by forming a thread on the outer circumferential surface of the second drive shaft 132, respectively.
  • the present invention is not limited thereto, and the third connecting portion 132a and the fourth connecting portion 132c may have any structure as long as the second rotor 134 and the pulsator 120 can be connected to the outer surface of the second driving shaft 132. Applicable
  • the first sleeve bearing 137a and the second sleeve bearing 137b are fixed to the upper inner circumferential surface and the lower inner circumferential surface of the first drive shaft 131, respectively, and are formed on the first sleeve bearing 137a and the second sleeve bearing 137b.
  • the two drive shafts 132 may be rotatably supported.
  • a sealing member 138 may be provided between the upper inner surface of the first driving shaft 131 and the upper outer surface of the second driving shaft 132 to prevent the washing water from leaking.
  • the first rotor 133 may include a first magnet 133a disposed to face the inner surface of the stator 135 at a predetermined gap. That is, the first magnet 133a may be provided on the outer surface of the first rotor 133, and the inner surface of the first rotor 133 may be connected to the first connecting portion 131c of the first drive shaft 131. According to this configuration, the first rotor 133 may rotate inside the stator 135.
  • the second rotor 134 includes a second magnet 134a disposed to face the outer surface of the stator 135 at a predetermined gap. That is, the second magnet 134a may be provided on the outer surface of the second rotor 134, and the inner surface of the second rotor 134 may be connected to the third connecting portion 132a of the second drive shaft 132. According to this configuration, the second rotor 134 may rotate on the outside of the stator 135.
  • the stator 135 includes a stator core formed in an annular shape, a bobbin that is a nonmagnetic material wrapped around the outer circumferential surface of the stator core, a first coil wound on one side of the stator core, and a second coil wound on the other side of the stator core. can do.
  • a first power may be applied to the first coil, and a second power may be applied to the second coil. Accordingly, only the first coil may supply power. When this is applied, only the first rotor 133 is rotated, and when power is applied only to the second coil, only the second rotor 134 is rotated. When power is simultaneously applied to the first coil and the second coil, the first rotor 133 is rotated. And the second rotor 134 may be rotated at the same time.
  • the washing machine 1 forms a first magnetic circuit between one side of the stator 135 on which the first rotor 133 and the first magnet 133a are disposed, and the second rotor. Since the second magnetic circuit can be formed between the other side of the stator 135 on which the 134 and the second magnets 134a are disposed, a pair of magnetic circuits independent of each other can be formed, and thus, the first rotor 133. And the second rotor 134 may be separately driven.
  • the driving device 130 has been described as having two coils wound on one stator 135, the present invention is not limited thereto. Only one coil may be wound on the stator 135, but the power applied through the inverter circuit. It may be configured to control the drum 110 and the pulsator 120 to rotate independently.
  • the washing machine 1 when the washing machine 1 according to an embodiment of the present invention applies power in opposite directions to the first coil and the second coil in order to rotate the drum 110 and the pulsator 120 in the opposite direction when washing,
  • the first rotor 133 and the second rotor 134 may rotate in opposite directions, and the drum 110 and the pulsator 120 may rotate in opposite directions.
  • the washing machine 1 since the washing machine 1 according to the embodiment of the present invention must simultaneously rotate the drum 110 and the pulsator 120 during dehydration and rinsing, the first coil and the second coil are simultaneously supplied with power.
  • the rotor 133 and the second rotor 134 may be rotated in the same direction, and thus the drum 110 and the pulsator 120 may be rotated in the same direction.
  • the washing machine 1 may stir laundry even when the drum 110 does not have a lifter. Rather, the washing machine 1 uses a pulsator 120 and a dual drive motor. It can improve performance. In addition, it is possible to secure a laundry space by omitting a structure such as a lifter. In addition, it is possible to shorten the washing time by improving the washing performance.
  • FIG. 6 is a view showing the interior of the water tank 20, the drum 210, and the pulsator 120 according to another embodiment of the present invention.
  • a drum 210 according to another embodiment will be described with reference to FIG. 6.
  • the same components as those of the embodiment shown in FIGS. 1 to 5 are denoted by the same reference numerals and description thereof may be omitted.
  • the drum 210 extends in the front-rear direction on the inner circumferential surface of the drum 210, is formed in a concave shape toward the water tank 20 from the inner circumferential surface of the drum 210 It may include a stirring groove 215.
  • the stirring groove 215 extends continuously from the front end to the rear end in the front and rear directions of the drum 210, the stirring groove 215 is not limited thereto, and the stirring groove 215 is in the longitudinal direction of the drum 210. It is also possible to be provided along a portion.
  • the drum 210 may include a through hole 211 and a protrusion 212 forming the through hole 211 formed at a portion of an inner circumferential surface thereof, and thus the through hole 211 and the protrusion 212 may be omitted.
  • a portion may be provided with a stirring groove 215.
  • Three stirring grooves 215 may be provided along the inner circumferential surface of the drum 210 at equal intervals, but the number of the stirring grooves 215 is not limited thereto.
  • the drum 210 since the drum 210 according to another embodiment of the present invention includes the stirring groove 215, the laundry can be raised and dropped more effectively, and the laundry space can be more widely secured.
  • FIG. 7 is a view showing the interior of the water tank 20, the drum 310, and the pulsator 120 according to another embodiment of the present invention.
  • a drum 310 according to another embodiment will be described with reference to FIG. 7.
  • the same components as those of the embodiment shown in FIGS. 1 to 5 are denoted by the same reference numerals and description thereof may be omitted.
  • the drum 310 extends in the front-rear direction to the inner circumferential surface of the drum 310, and is convex toward the rotation axis of the drum 310 from the inner circumferential surface of the drum 310. It may include a stirring protrusion 315 is formed.
  • the stirring protrusion 315 extends continuously from the front end to the rear end in the front-rear direction of the drum 310, but is not limited thereto, and the stirring protrusion 315 may extend in the longitudinal direction of the drum 310. It is also possible to be provided along a portion.
  • the drum 310 may include a through hole 311 formed in a portion of the inner circumference and a protrusion 312 forming the through hole 311, and thus the through hole 311 and the protrusion 312 may be omitted.
  • the portion may be formed with a stirring protrusion 315.
  • Three stirring protrusions 315 may be provided along the inner circumferential surface of the drum 310 at equal intervals, but the number of stirring protrusions 315 is not limited thereto.
  • the drum 310 since the drum 310 according to another embodiment of the present invention includes the stirring protrusion 315, the laundry can be raised and dropped more effectively.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
PCT/KR2017/005683 2016-07-18 2017-05-31 세탁기 WO2018016733A1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US16/319,172 US10982371B2 (en) 2016-07-18 2017-05-31 Washing machine
CN201780043985.8A CN109477279B (zh) 2016-07-18 2017-05-31 洗衣机
EP17831207.0A EP3453795B1 (en) 2016-07-18 2017-05-31 Washing machine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2016-0091051 2016-07-18
KR1020160091051A KR102590137B1 (ko) 2016-07-18 2016-07-18 세탁기

Publications (1)

Publication Number Publication Date
WO2018016733A1 true WO2018016733A1 (ko) 2018-01-25

Family

ID=60993158

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/005683 WO2018016733A1 (ko) 2016-07-18 2017-05-31 세탁기

Country Status (5)

Country Link
US (1) US10982371B2 (zh)
EP (1) EP3453795B1 (zh)
KR (1) KR102590137B1 (zh)
CN (1) CN109477279B (zh)
WO (1) WO2018016733A1 (zh)

Families Citing this family (7)

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KR102396321B1 (ko) * 2016-07-12 2022-05-10 삼성전자주식회사 세탁기
KR102598648B1 (ko) * 2018-08-30 2023-11-03 엘지전자 주식회사 세탁기 및 세탁기의 제어방법
WO2020045888A1 (ko) * 2018-08-30 2020-03-05 엘지전자 주식회사 세탁기 및 세탁기의 제어방법
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